The Steam Big Picture Page has word that the Windows beta for this new mode is now underway. "PC gaming continues to be the leading edge of entertainment, whether it's social gaming, MMOs, graphics hardware, free-to-play, or competitive gaming," said Gabe Newell, president of Valve. "With Big Picture for Steam, we are trying to do our part to give customers and developers what they want - their games, everywhere, optimized for the environment in which they are playing."